Improved alcohol blow-pipe



UNITED STATES- EDVARD CONWAY,

PATENT OEEICE.

OF DAYTON, OHIO.

IMPROVED ALCOHOL BLOW-PIPE.

To all whom itmy concern.'

Beit known that I, EDWARD CONWAY, of Dayton, in the county of Montgomery and State of Ohio, have invented a new and useful Improvement in Alcohol Blow-Pipes; and I do hereby declare that the followingisafull, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l is a side elevation of a blow-pipe with my improvements. In this view it is represented as being used for performing the two operations of melting and solderiugatoue and the same time. Fig. 2 is a vertical central section of the same. Fig. 3 represents a detached view of a lamp adapted for use in connection with the blow-pipe when the two operations of melting and soldering are performed at one and the same time.

Similar letters of reference in each of the several figures indicate corresponding parts.

The object of my improvement is, rst, to avoid all danger from explosions; second, to enable a person to regulate with the greatest nicety the amount of pressure through its jettubes without reducing the size of the inlet'orifices of the same; third, to afford facilities for performing the soldering process with either a small or large .sized jet-tube, and, fourth, to afford facilities for performing the two processes of soldering and melting at one and the same time.

The nature of my invention consists in the use of acompound regulator consisting of two weighted levers and a set-screw in combination with an alcohol-boiler,which has two jettubes of unequal bore, one branching off from and ruiming nearly parallel with the other, and the two communicating at one time or separately with the boiler by means of athreeway cock, whereby by simply turning the screw of the regulator and adjusting thethree way cock from one tube to another the amount of pressurein the boiler and the size and force of the jet through the tubes can be regulated to suit the work being performed to the greatest nicety and with facility.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

A represents a wo hinged front and top, gether and thrown bac whole interior of the box.

made to serve as a shelf, as shown at a, Figs. 1 and 2. It likewise has a shelf or partition, b, for the alcohol-boiler to rest upon, and also for separating said boiler from the heatinglamp.

B is the alcohol-boiler. It, as usual, is furnished with two outlets, C and D. Over the outlet C a safety-valve, E. is arranged in a seat, c, of the top, and in the outlet D the end of the hollow shank dof the jet-tubes F G is inserted. The safety-valve is kept to its seat by a weighted lever, H,which is controlled in the extent of its movementby another lever, I, which is more heavily weighted than it.

may be regulated in a moment by a set-screw, f, as will be evident from the drawings. By this arrangement the safety-valve will always remain in perfect order, as none of the parts are exposed to the action of the heated vapor, as in the lamp patented by Lawson in 1856, in which the springs soon lose their elasticity and allow the valves to rise to too great an extent. Ihe lever also enables the operator, by asimple turn of the screw,to reduce or increase the pressure through the jet-tubes to any extent desired.

J is a threeway cock for shutting oli" and keeping up the communication between the boiler and the jettubes. It is constructed so that only one or both tubes may communicate at the same time with the boiler.

The jet-tube F is made with a larger bore than G, as it is designed for melting or use in heavy soldering. The tube G branches off at rightangles from its end some distance forward of the same, so that it may be used with convenience for soldering while the melting process is going on.

K is the spirit-heatinglamp arranged under the partition b, with its tube passing up through the same.

L is the sliding collar for regulating the dame. By raising this collar, as shown in red, the flame will be confined and its intensity lessened.

a hinged side,which can be thrown down and The required distance between the two levers F, and stands under and with M is the soldering and melting,1a1np.\ It has two wick-tubes, g g, projecting from its top7 and one7 h, from its side. N is the melting-furnace, and O the crucible. The lamp and furnace rest on the shelf a, as shown, and thejet-tube F passes into the furnace and up between the two wick-tubes g, and jet-tube G terminates near rthe wickltube h, as shown.

By having the jet-tube F discharge its vapor between two flames great intensity of heat is secured, and gold can be melted in the crucible at the start in five minutes without the aid of charcoal, so as to be run into'any shape desired.

This blow-pipe is admirably adapted for denlists7 and jewelers use, as it enables them to perform the two processes-melti ng and solder- EDWARD CONWAY.

Vitnesses: J. W. DIETRICH, a JOHN CROWB. 

